Model: 3157-348

Spacing Threaded Standoff

Special Features:

0.093 in. Hole through shoulder

Properties:

Thread Class
2b left internal (includes through thread)2a right external
Thread Direction
Right-hand left internal (includes through thread)
Thread Direction
Right-hand right external
Flange Diameter
0.250 inches
Flange Thickness
Between 2.701 inches and 2.706 inches
Length
3.125 inches
Thready Qty Per Inch (tpi)
40 left internal (includes through thread)
Thready Qty Per Inch (tpi)
40 right external
Thread Size
0.112 inches right external
Thread Size
0.112 inches left internal (includes through thread)
Material
Steel comp 303 standoff
Material Specification
Astm a582 assn standard single material response standoff
Surface Treatment
Passivate standoff
Style Designator
Flanged with left internal thread
Thread Series Designator
Unc left internal (includes through thread)
Thread Series Designator
Unc right external
NSN
5340-00-986-1288
Part Number
3157-348
Description
Standoff,threaded,spacing
CAGE

Part 3157-348 NSN 5340-00-986-1288

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
40280
FIIG:
A08900
Concept No.:
1
App. Key:
B
Cond. Code:
1
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
P
PMIC:
U
ESD:
ESD:
MMAC:
CRITL:
X

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